WO2022098045A1 - Drug injection control device having structure in which rod lock screwed to piston rod is capable of linear motion whilst rotation thereof is restricted inside rod holder - Google Patents

Drug injection control device having structure in which rod lock screwed to piston rod is capable of linear motion whilst rotation thereof is restricted inside rod holder Download PDF

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Publication number
WO2022098045A1
WO2022098045A1 PCT/KR2021/015680 KR2021015680W WO2022098045A1 WO 2022098045 A1 WO2022098045 A1 WO 2022098045A1 KR 2021015680 W KR2021015680 W KR 2021015680W WO 2022098045 A1 WO2022098045 A1 WO 2022098045A1
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WO
WIPO (PCT)
Prior art keywords
rod
coupled
guide
drug
piston rod
Prior art date
Application number
PCT/KR2021/015680
Other languages
French (fr)
Korean (ko)
Inventor
조희민
윤종덕
김재천
강기윤
손형찬
윤선혜
Original Assignee
(주)풍림파마텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by (주)풍림파마텍 filed Critical (주)풍림파마텍
Priority to CN202180011361.4A priority Critical patent/CN115003354B/en
Priority to US17/795,624 priority patent/US20230057245A1/en
Priority to JP2022545951A priority patent/JP7460780B2/en
Publication of WO2022098045A1 publication Critical patent/WO2022098045A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
    • A61M5/3158—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod performed by axially moving actuator operated by user, e.g. an injection button
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31515—Connection of piston with piston rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31525—Dosing
    • A61M5/31528—Dosing by means of rotational movements, e.g. screw-thread mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31535—Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose
    • A61M5/31543—Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose piston rod reset means, i.e. means for causing or facilitating retraction of piston rod to its starting position during cartridge change
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
    • A61M5/31553—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe without axial movement of dose setting member
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31583—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod
    • A61M5/31585—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod performed by axially moving actuator, e.g. an injection button
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/3159—Dose expelling manners
    • A61M5/31593—Multi-dose, i.e. individually set dose repeatedly administered from the same medicament reservoir
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8275—Mechanical
    • A61M2205/8281—Mechanical spring operated

Definitions

  • the present invention relates to a drug injection control device having a structure in which a rod lock screw-coupled to an outer circumferential surface of a piston rod that moves linearly is capable of only linear motion in a state in which rotation is restricted inside a rod holder coupled to a cartridge holder.
  • Auto-injector is a product made to make self-administration easy even for patients or people who do not have special training in medical practice, so that the needle is not exposed to the patient.
  • an auto-injector that is small so that it can be easily used and accommodated, and that is manufactured to reduce manufacturing and assembly costs by being simple for manufacturing, assembly, and usability, and which does not have a large impact on the environment.
  • a pen-type syringe has a function that allows a plurality of doses to be provided from a drug container, and the dose quantity is set immediately before the dose is delivered. Because many users of drug delivery devices are inexperienced, it is often desirable to provide the user with some sort of indication or information that a dose delivery sequence has been performed and that it is safe to remove the drug delivery device from the dose delivery site. .
  • Korean Patent Application Laid-Open No. 10-2017-00065623 provides a drug injection device, specifically a housing defining an interior space and having a longitudinal window, a rotatable dosage dial held axially with respect to the housing, a set dosage a rotatable graduated drum carrying indicia for indicating a magnitude of a quantity, wherein a sliding element of the graduated drum is configured to slide axially relative to the housing during dose setting, wherein the indicia carried by the graduated drum slides viewable through the window and thus the longitudinal window and the sliding window in combination with the indication to form a dose size display, the rotatable graduated drum being rotated within the interior space defined by the housing during dose setting, the sliding element
  • the inner surface discloses having an inner feature that engages with an outer thread provided on the outer surface of the graduated drum.
  • Korean Patent Application Laid-Open No. 10-2019-0017806 provides a drug injection device, including a housing and a drug delivery device including an operating mechanism disposed inside the housing, and a plunger disposed to act on a stopper of a drug container
  • a configuration is presented comprising a rod as well as an actuator slidably arranged and connected to the plunger rod to act on the stopper when actuated by displacement in the longitudinal direction of the actuating mechanism.
  • the present invention is to solve the above problems, according to the rotation of the rod guide and the lower linear motion of the piston rod so as to stably inject the drug set through the dose dial, a rod lock screwed onto the outer peripheral surface of the piston rod.
  • An object of the present invention is to provide a drug injection control device technology having a structure in which only linear motion is possible in a state in which rotation is restricted on the inside of a rod holder.
  • the drug injection control device for achieving the above object is a hollow housing 10, a dose dial 20 rotatably coupled to one side of the housing 10, the housing 10 An injection button disposed on the outside of the dosing dial 20, the cartridge holder 30 is coupled on one side of the injection needle to which the drug is discharged at the same time that the cartridge is accommodated in a fixedly coupled state on the other side of the dosing dial 20 ( 40), and a drug to be injected by storing a torsion moment in the torsion spring 140 disposed in the housing 10, including a cap 60 that is detachably coupled to the outside of the cartridge holder 30 Injection amount setting module 100 to set the amount of; and a drug dispensing module 200 for discharging from the cartridge built into the cartridge holder 30 to the outside by moving through release of the torsion moment applied to the torsion spring 140; including, the drug dispensing module 200 ), the rod guide 210 that is switchably coupled on the injection amount setting module 100 according to the operation of the injection button 40,
  • the load lock 240 is the rod holder ( 230), the lock protrusion 243 slides through the lock guide 232 formed through the longitudinal direction on the outer circumferential surface of the outer circumferential surface of the 230) to enable only linear motion of the load lock 240, and the load lock 240 It may be preferable that only linear motion is possible in a state in which rotation is restricted on the inside of the rod holder 230 .
  • the load lock 240 may preferably include a lock body 241 coupled to the outer surface of the piston rod 220 and a lock protrusion 243 protruding from one side of the lock body in the axial direction.
  • the injection amount setting module 100, the reset tube 110 switchably coupled to the dose dial 20 according to the operation of the injection button 40, is coupled on the outside of the reset tube 110 at the same time
  • the rod guide 210 includes a torsion spring 140 to which both ends are coupled, and the rod guide 210 coupled to the reset tube 110 is coupled to the inside of the piston rod 220 by screw rotation coupling. ) by enabling the lower linear motion of the piston rod 220 through the rotation, it may be desirable to have a cartridge drug release structure through the screw-type coupling between the piston rod 220 and the rod guide 210
  • the torsion spring 140 having both ends coupled to the spring base 150 and the ratchet tube 120, respectively, and the dose dial 20 During rotation, one side of the torsion spring 140 fixed to the ratchet tube 120 rotates while the other side of the torsion spring 140 fixed to the spring base 150 is fixed. It may be desirable to create a twisted state of the spring by maintaining it.
  • the rod guide 210 includes a guide body having a guide spiral protrusion detachably coupled to a guide coupling groove formed on an inner surface of the piston rod 220, and a guide body protruding from one side of the outer surface of the guide body to form the reset tube. It may be preferable to include a guide rotating protrusion detachably coupled to the guide coupling groove formed on the inner surface of the 110 .
  • the rod lock screw-coupled to the outer circumferential surface of the piston rod moves linearly in a state in which rotation is restricted on the inside of the rod holder.
  • the drug injection amount according to the user's intention is set in advance through the injection amount setting module that stores the torsion moment in the torsion spring and sets the amount of the drug to be injected by rotating in a state linked to the dose dial in the housing.
  • the drug discharge module switchably coupled to the injection amount setting module according to the operation of the injection button disposed on the upper end of the drug injection control device, through the reset tube operably coupled to the injection button
  • the rod guide is coupled by screw rotation on the inside of the piston rod, according to the rotation of the rod guide and the lower linear motion of the piston rod, the rod lock is locked through the lock guide formed through the longitudinal direction on the outer circumferential surface of the rod holder. As the protrusion slides, only the linear motion of the load lock is possible.
  • FIG. 1 shows a combined perspective view of a drug injection control device according to an embodiment of the present invention.
  • Figure 2 shows an exploded perspective view of the drug injection control device according to Figure 1;
  • FIG. 3 is a cross-sectional view of the drug injection control device of FIG.
  • FIG. 4 is an enlarged view of area A of FIG. 3 .
  • 5 is a view showing a coupling relationship between the dose dial and the reset tube.
  • FIG. 6 shows a state in which the injection button, the button plate, the reset tube, the spring base and the scale drum are combined.
  • FIG. 8 is an enlarged view of area B of FIG. 3 .
  • FIG. 10 is a cross-sectional perspective view of FIG. 9 .
  • the drug injection control device includes a hollow housing 10, a dose dial 20 rotatably coupled to one side of the housing 10, and a cartridge in which a drug is embedded in a state fixedly coupled to the other side of the housing 10. is accommodated and the injection needle from which the drug is discharged is coupled on one side of the cartridge holder 30, the injection button 40 disposed on the outside of the dose dial 20, the injection button 40 within the dose dial 20 ) includes a button spring 50 that enables pressing and recovery, and a cap 60 that is detachably coupled on the outside of the cartridge holder 30 .
  • the present invention provides an injection amount setting module 100 for setting an amount of a drug to be injected by storing a torsion moment in a torsion spring by rotating in a state interlocked with the dose dial 20 in the housing 10; and a drug set amount set in the injection amount setting module 100 by being switchably coupled to the injection amount setting module 100 according to the operation of the injection button 40, and moving through release of a torsion moment applied to the torsion spring and a drug dispensing module 200 for discharging from the cartridge built into the cartridge holder 30 to the outside.
  • the injection amount setting module 100, the reset tube 110 switchably coupled to the dose dial 20 according to the operation of the injection button 40, is coupled on the outside of the reset tube 110 at the same time
  • a torsion spring 140 having both ends coupled thereto, and a spring base 150 having one side coupled to the ratchet tube 120 and the other side of the torsion spring 140 fixed therein, is fixedly disposed within the dose dial 20 and a button spring ( 50) and an anchor 170 slidably coupled to the inside of the housing 10 in a rotatably coupled state on the button plate 160 and the ratchet tube 120 serving to support the 50).
  • the reset tube 110 is a structure having a hollow cylindrical shape, and a button coupling groove 111 formed in a groove along the circumferential direction on the outer circumferential surface so that the button leg part 41 constituting the injection button 40 is coupled, and a dose dial.
  • a dial coupling protrusion 112 releasably coupled to the tube coupling protrusion formed inside the 20, a tube coupling hole 113 coupled to the ratchet tube 120 to enable simultaneous rotation of the ratchet tube 120 includes
  • the ratchet tube 120 is a structure having a hollow cylindrical shape accommodating the reset tube 110 therein, and on one side of the drum guide protrusion 121 protruding in the longitudinal direction on the outer circumferential surface, and the ratchet tube 120 .
  • Anchor coupling groove 122 grooved along the circumferential direction to enable coupling of the anchor 170 in a rotatable state, and a second tube coupling hole 123 for binding on the first tube coupling hole of the reset tube 110 .
  • a tube spring engaging groove 124 that enables coupling with the end of the torsion spring 140 .
  • the scale drum 130 includes a drum guide groove 131 grooved along the longitudinal direction on the inner surface to correspond to the drum guide projection formed on the ratchet tube 120 , and a drum formed to protrude in a spiral shape on the inner surface of the housing 10 . It includes a drum rotation groove 132 grooved along a spiral shape on the outer peripheral surface to correspond to the rotation projection.
  • the torsion spring 140 has both ends coupled to the spring base 150 and the ratchet tube 120, respectively, and when rotating through the dose dial 20, the torsion spring fixed to the ratchet tube 120 While the one side 141 of 140 rotates, the other side 142 of the torsion spring 140 fixed to the spring base 150 maintains a fixed state, thereby creating a twisted state of the spring.
  • the spring base 150 is a structure that is disposed on the inside of the dose dial 20 and is fixedly coupled to the housing 10 without shaking, and a base spring locking groove that enables coupling with the end of the torsion spring 140 . and a latch 152 formed to click in response to the latch protrusion 22 formed on the dose dial 20 when the dose dial 20 is rotated and driven. That is, when the dose dial 20 is rotated, feedback on the injection amount through the process of sequentially contacting the latch protrusion formed on one surface of the dial partition wall 21 formed along the radial direction on the inside of the dose dial 20 and the latch to provide
  • the button plate 160 is a circular plate that is fixedly disposed on the first chamber formed on one side based on the dial partition wall of the dose dial 20, and includes a guide fixing hole 161 formed in the center of the button plate 160 and It includes a plurality of button guide holes 162 radially formed around the guide fixing hole.
  • the plurality of button guide holes are coupled through a plurality of button leg portions 41 constituting the injection button 40 . That is, the injection button 40 enables stable linear motion through the button plate 160 and at the same time allows the button spring 50 to be stably disposed on the injection button 40 .
  • the button spring 50 When the button spring 50 is placed on the button plate 160 and is pressed against the injection button 40, the button plate 160 is compressed in a state where the button plate 160 is the lowest point, and when the pressure is released, the button spring 50 is restored. am.
  • the anchor 170 includes an anchor circumferential protrusion 171 protruding along the circumferential direction on the inner surface and a housing engaging protrusion 172 formed along the axial direction on the outer circumferential surface.
  • the anchor circumferential protrusion 171 is coupled to correspond to the anchor 170 coupling groove formed on the ratchet tube 120
  • the housing coupling protrusion 172 is on the anchor sliding part 11 formed on the inner surface of the housing 10 . combine to match.
  • a case in which the dose dial 20 is rotated while the injection button 40 is not pressed is as follows.
  • the reset tube 110 coupled to the tube coupling tooth formed along the circumferential direction on the inner surface of the dose dial 20 is coupled to the ratchet tube 120 coupled through the other side of the reset tube 110, and the ratchet
  • the scale drum 130 is the housing 10 .
  • the drum guide spiral protrusion and the spiral formed on the inner surface are engaged in a mating state.
  • the drug dispensing module 200 is a rod guide 210 that is switchably coupled to the reset tube 110 according to the operation of the injection button 40 , and is screwed onto the outer surface of the rod guide 210 .
  • the piston rod 220 which discharges the drug of the cartridge embedded in the cartridge holder 30 to the outside by performing a linear motion according to the rotational motion of the rod guide 210 in the state of being coupled to the cartridge holder 30
  • the rod guide 210 is a guide body 211 having a guide spiral protrusion 212 detachably coupled to a guide coupling groove formed on the inner surface of the piston rod 220), and protrudes on an outer surface of one side of the guide body.
  • the center of the button plate 160 in a state in which the guide rotation protrusion 213 which is formed and detachably coupled to the guide coupling groove formed on the inner surface of the reset tube 110 and the guide body protrudes along the axial direction on the end of the guide body It includes a guide ball 214 coupled to the guide fixing hole formed in the. That is, the rod guide 210 is coupled to the guide ball through the guide fixing hole of the button plate 160 fixedly coupled to the dose dial 20 to enable rotation in place without up-and-down movement in place. It has a switching state that can be coupled or released on the reset tube 110 through the reset tube 110, and enables a relative movement by screwing the piston rod 220 through the guide spiral protrusion.
  • the piston rod 220 has a hollow cylindrical shape through which the rod guide 210 is coupled therethrough along its axial direction, and a rod progressing part 221 in which a lock coupling protrusion to which the rod lock 240 is rotatably coupled is formed. ) and a rod stop 222 in which the stopper 223 is formed so that the load lock 240 is non-rotatable.
  • the rod holder 230 has a hollow cylindrical shape, and is fixed on the outside of the cartridge holder 30 through a holder fixing jaw 231 protruding along the circumferential direction on the outer circumferential surface, and on the outer circumferential surface in the longitudinal direction. It enables the linear movement of the load lock 240 through the lock guide 232 formed through the .
  • the load lock 240 enables rotational motion in conjunction with the linear motion of the piston rod 220 in a state in which it is screwed on the outer surface of the piston rod 220 .
  • the load lock 240 includes a lock body 241 coupled to an outer surface of the piston rod 220 and a lock protrusion 243 protruding in the axial direction on one side of the lock body.
  • the lock protrusion performs a linear motion along the axial direction of the cartridge holder 30 while being inserted into the lock guide 232 .
  • the load lock 240 performs a motion in association with the rotation of the piston rod 220 , but the lock guide 232 is moved in a state in which rotation is restricted by the lock guide 232 . Only linear motion is possible.
  • the rod guide is screwed onto the inside of the piston rod in a state where the screw is formed in the piston rod, and the rod coupled to the reset tube according to the rotation of the reset tube. With the guide rotated in place, the piston rod engaged with the rod guide is lowered toward the cartridge holder.
  • the rod lock is rotatably connected to the external screw of the piston rod, and in the above state, the rod holder is installed in a manner that surrounds the piston rod and the rod lock to rotate the piston rod and linearly move the rod lock.
  • the rod guide 210 coupled to the reset tube 110 is coupled to the inside of the piston rod 220 by screw rotation, whereby the rod guide 210 rotates. It enables the lower linear motion of the piston rod 220 through.
  • the drug injection control device as described above is the rotation of the rod guide 210 and the linear motion structure of the piston rod interlocking with the rod guide 210 to stably inject the set drug through the dose dial. make it possible

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

A drug injection control device according to the present invention proposes a structure in which, according to the rotation of a rod guide and the lower linear motion of a piston rod, a rod lock screwed to the outer circumferential surface of the piston rod can only move linearly, with the rotation thereof restricted inside a rod holder. In a state in which a drug injection amount according to a user's intention is preset by means of an injection amount setting module that sets the amount of a drug to be injected by rotating whilst interlinked with a dose dial within a housing to store a torsional moment in a torsion spring, in the process of enabling the operation of a drug discharging module, switchably coupled to the injection amount setting module, in response to the operation of an injection button disposed on the upper end of the drug injection control device, a lock protrusion slides through a lock guide part, formed through the outer circumferential surface of the rod holder in the longitudinal direction, in accordance with the rotation of the rod guide and the lower linear motion of the piston rod, thereby enabling the rod lock to only make a linear motion.

Description

피스톤 로드에 스크류 결합된 로드 락이 로드 홀더 내부에 회전 제한된 상태에서 직선 운동 가능한 구조를 갖는 약물 투입 조절 장치A drug injection control device having a structure in which a rod lock screw-coupled to a piston rod can move linearly in a state where rotation is restricted inside the rod holder
본 발명은 직선 운동하는 피스톤 로드의 외주면 상에 스크류 결합된 로드락이 카트리지 홀더에 결합된 로드 홀더 내부 상에서 회전이 제한된 상태에서 직선 운동 만을 가능하게 하는 구조를 갖는 약물 투입 조절 장치에 관한 것이다.The present invention relates to a drug injection control device having a structure in which a rod lock screw-coupled to an outer circumferential surface of a piston rod that moves linearly is capable of only linear motion in a state in which rotation is restricted inside a rod holder coupled to a cartridge holder.
오토 인젝터(auto injector)는 환자나 특별히 의료행위 훈련을 받지 않은 사람들도 자가투여가 용이하도록 만든 제품으로서 주사바늘이 환자에게 노출되지 않게 한다. 오토 인젝터는 용이하게 사용되고 수용될 수 있도록 소형으로 구성되며, 제작, 조립, 사용성을 위해 단순하여 제작 및 조립 비용을 절감하게 제작되며, 환경에 끼치는 영향이 크지 않은 오토인젝터에 대한 필요성이 있다.Auto-injector (auto injector) is a product made to make self-administration easy even for patients or people who do not have special training in medical practice, so that the needle is not exposed to the patient. There is a need for an auto-injector that is small so that it can be easily used and accommodated, and that is manufactured to reduce manufacturing and assembly costs by being simple for manufacturing, assembly, and usability, and which does not have a large impact on the environment.
피부 내 약물주입을 위해 사용되는 약물주입장치는 사용에 있어서 상당한 숙련도와 경험을 요구하고 있기 때문에 최근에는 피부에 대고 누르면 주사바늘이 피부 속으로 삽입되어 자동으로 약물이 주입되는 약물 주입기가 제시되고 있다.Since the drug injection device used for intradermal drug injection requires considerable skill and experience in its use, recently, a drug injector that automatically injects the drug by inserting the needle into the skin when pressed against the skin has been proposed. .
약물 주입을 위해 시중에 유동되는 주사기들 중 펜형 주사기는 다수의 도스(dose)가 약물 용기로부터 제공될 수 있도록 하는 기능성을 구비하는데, 도스량(dose quantity)은 도스가 전달되기 직전에 설정된다. 약물 전달 장치의 다수의 사용자들은 경험이 많지 않기 때문에, 도스 전달 시퀀스가 행해졌으며 도스 전달 부위로부터 약물 전달 장치를 제거하는 것이 안전하다고 하는 몇몇 종류의 표시 또는 정보가 사용자에게 제공되는 것이 종종 바람직하게 된다.Among the syringes flowing on the market for drug injection, a pen-type syringe has a function that allows a plurality of doses to be provided from a drug container, and the dose quantity is set immediately before the dose is delivered. Because many users of drug delivery devices are inexperienced, it is often desirable to provide the user with some sort of indication or information that a dose delivery sequence has been performed and that it is safe to remove the drug delivery device from the dose delivery site. .
한국공개특허 제 10-2017-00065623 호는 약물 주입 장치를 제공하는데, 구체적으로는 내부 공간을 형성하고 길이방향 창을 가지는 하우징, 하우징과 관련하여 축방향으로 유지되는 회전 가능한 투여량 다이얼, 설정된 투여량의 크기를 나타내기 위한 표시를 수반하는 회전 가능한 눈금 드럼을 포함하고, 눈금 드럼의 활주 요소는 투여량 설정 중에 하우징과 관련하여 축방향으로 활주되도록 구성되고, 눈금 드럼에 의해서 수반되는 표시가 활주 창을 통해서 보여질 수 있고 그에 따라 길이방향 창 및 활주 창이 표시와 조합되어 투여량 크기 디스플레이를 형성하며, 회전 가능한 눈금 드럼은 투여량 설정 중에 하우징에 의해서 형성된 내부 공간 내에서 회전되며, 활주 요소의 내부 표면은 눈금 드럼의 외부 표면 상에 제공된 외부 나사산과 결합되는 내부 특징부를 구비하는 내용을 개시한다.Korean Patent Application Laid-Open No. 10-2017-00065623 provides a drug injection device, specifically a housing defining an interior space and having a longitudinal window, a rotatable dosage dial held axially with respect to the housing, a set dosage a rotatable graduated drum carrying indicia for indicating a magnitude of a quantity, wherein a sliding element of the graduated drum is configured to slide axially relative to the housing during dose setting, wherein the indicia carried by the graduated drum slides viewable through the window and thus the longitudinal window and the sliding window in combination with the indication to form a dose size display, the rotatable graduated drum being rotated within the interior space defined by the housing during dose setting, the sliding element The inner surface discloses having an inner feature that engages with an outer thread provided on the outer surface of the graduated drum.
한국공개특허 제 10-2019-0017806 호는 약물 주입 장치를 제공하는데, 하우징과, 하우징 내부에 배치된 작동 기구를 포함하는 약물 전달 장치를 포함한 상태에서, 약물 용기의 스토퍼 상에 작용하도록 배치된 플런저 로드 뿐만 아니라, 작동 기구의 종방향으로 변위됨으로써 동작될 때 스토퍼 상에 작용하기 위해 플런저 로드에 연결되고 슬라이딩 가능하게 배치된 액추에이터를 포함하는 구성을 제시한다.Korean Patent Application Laid-Open No. 10-2019-0017806 provides a drug injection device, including a housing and a drug delivery device including an operating mechanism disposed inside the housing, and a plunger disposed to act on a stopper of a drug container A configuration is presented comprising a rod as well as an actuator slidably arranged and connected to the plunger rod to act on the stopper when actuated by displacement in the longitudinal direction of the actuating mechanism.
본 발명은 상기 종래의 문제점을 해소하고자 하는 것으로서, 도즈 다이얼을 통해 설정된 약물을 안정적으로 주입 가능하도록 로드 가이드의 회전 및 피스톤 로드의 하부 직선 운동에 따라서, 피스톤 로드의 외주면 상에 스크류 결합된 로드락이 로드 홀더 내부 상에서 회전이 제한된 상태에서 직선 운동 만이 가능한 구조를 갖는 약물 투입 조절 장치 기술을 제공하고자 하는 것이다.The present invention is to solve the above problems, according to the rotation of the rod guide and the lower linear motion of the piston rod so as to stably inject the drug set through the dose dial, a rod lock screwed onto the outer peripheral surface of the piston rod. An object of the present invention is to provide a drug injection control device technology having a structure in which only linear motion is possible in a state in which rotation is restricted on the inside of a rod holder.
상기와 같은 목적을 달성하기 위한 본 발명에 따른 약물 투입 조절 장치는, 중공의 하우징(10), 상기 하우징(10)의 일측 상에 회전 가능하게 결합된 도즈 다이얼(20), 상기 하우징(10)의 타측 상에 고정 결합된 상태에서 약물이 내장된 카트리지가 수용되는 동시에 약물이 토출되는 주입 니들이 일측 상에 결합되는 카트리지 홀더(30), 상기 도즈 다이얼(20)의 외측 상에 배치되는 주입 버튼(40), 및 상기 카트리지 홀더(30)의 외부 상에 분리가능하게 결합되는 캡(60)을 포함하고, 상기 하우징(10) 내에 배치된 토션 스프링(140)에 비틀림 모멘트를 저장하여 주입하고자 하는 약물의 량을 설정하게 하는 주입량 설정 모듈(100); 및 상기 토션 스프링(140)에 가해진 비틀림 모멘트의 해제를 통해 운동함으로써 상기 카트리지 홀더(30)에 내장된 카트리지에서 외부로 토출하게 하는 약물 토출 모듈(200);을 포함하고, 상기 약물 토출 모듈(200)은, 상기 주입 버튼(40)의 동작에 따라 상기 주입량 설정 모듈(100) 상에 스위칭 가능하게 결합되는 로드 가이드(210), 상기 로드 가이드(210)의 외측 상에 스크류 결합된 상태에서 상기 로드 가이드(210)의 회전 운동에 따라 직선 운동을 실시함으로써 카트리지 홀더(30)에 내장된 카트리지의 약물을 외부로 토출하게 하는 피스톤 로드(220), 상기 카트리지 홀더(30)의 축방향을 따라 일측 상에 결합하되 상기 피스톤 로드(220)가 축방향을 따라 관통 결합된 상태로 배치된 로드 홀더(230) 및 상기 로드 홀더(230) 내에서 상기 피스톤 로드(220)의 외면 상에 스크류 결합되는 로드락(240)을 포함하고, 상기 주입 버튼(40) 동작 시에, 상기 로드 가이드(210)의 회전 및 상기 피스톤 로드(220)의 하부 직선 운동에 따라서, 상기 로드락(240)은 상기 로드 홀더(230)의 외주면 상에 길이 방향을 따라 관통 형성된 락 안내부(232)를 통해 상기 락 돌기부(243)가 슬라이딩 운동함으로써 상기 로드 락(240)의 직선운동 만을 가능하게 하며, 상기 로드락(240)은 상기 로드 홀더(230) 내부 상에서 회전이 제한된 상태에서 직선 운동 만이 가능한 것이 바람직할 수 있다.The drug injection control device according to the present invention for achieving the above object is a hollow housing 10, a dose dial 20 rotatably coupled to one side of the housing 10, the housing 10 An injection button disposed on the outside of the dosing dial 20, the cartridge holder 30 is coupled on one side of the injection needle to which the drug is discharged at the same time that the cartridge is accommodated in a fixedly coupled state on the other side of the dosing dial 20 ( 40), and a drug to be injected by storing a torsion moment in the torsion spring 140 disposed in the housing 10, including a cap 60 that is detachably coupled to the outside of the cartridge holder 30 Injection amount setting module 100 to set the amount of; and a drug dispensing module 200 for discharging from the cartridge built into the cartridge holder 30 to the outside by moving through release of the torsion moment applied to the torsion spring 140; including, the drug dispensing module 200 ), the rod guide 210 that is switchably coupled on the injection amount setting module 100 according to the operation of the injection button 40, the rod in a screw-coupled state on the outside of the rod guide 210 The piston rod 220 for discharging the drug of the cartridge contained in the cartridge holder 30 to the outside by performing a linear motion according to the rotational motion of the guide 210, one side along the axial direction of the cartridge holder 30 The rod holder 230 coupled to the piston rod 220 is disposed in a through-coupled state along the axial direction and a load lock screwed onto the outer surface of the piston rod 220 within the rod holder 230 . 240, and when the injection button 40 is operated, according to the rotation of the rod guide 210 and the lower linear motion of the piston rod 220, the load lock 240 is the rod holder ( 230), the lock protrusion 243 slides through the lock guide 232 formed through the longitudinal direction on the outer circumferential surface of the outer circumferential surface of the 230) to enable only linear motion of the load lock 240, and the load lock 240 It may be preferable that only linear motion is possible in a state in which rotation is restricted on the inside of the rod holder 230 .
상기 로드락(240)은 상기 피스톤 로드(220)의 외면 상에 결합하는 락 본체(241) 및 락 본체의 일측 상에 축 방향을 따라 돌출 형성되는 락 돌기부(243)를 포함하는 것이 바람직할 수 있다The load lock 240 may preferably include a lock body 241 coupled to the outer surface of the piston rod 220 and a lock protrusion 243 protruding from one side of the lock body in the axial direction. there is
상기 주입량 설정 모듈(100)은, 상기 주입 버튼(40)의 동작에 따라 상기 도즈 다이얼(20)에 스위칭 가능하게 결합되는 리셋 튜브(110), 상기 리셋 튜브(110)의 외측 상에 결합되어 동시에 회전 구동하는 라쳇 튜브(120), 상기 라쳇 튜브(120)의 외면 상에 축 방향을 따라 슬라이딩 가능하게 회전 운동하는스케일 드럼(130), 및 상기 하우징(10)과 상기 라쳇 튜브(120) 상에 양 끝단이 결합된 토션 스프링(140)을 포함하고, 상기 리셋 튜브(110)에 결합된 로드 가이드(210)가 상기 피스톤 로드(220)의 내부 상에 스크류 회전 결합으로 결속됨으로써 상기 로드 가이드(210)의 회전을 통해 상기 피스톤 로드(220)의 하부 직선 운동을 가능하게 함으로써, 피스톤 로드(220)와 로드 가이드(210) 간의 스크류 방식 결합을 통한 카트리지 약물 방출 구조를 갖는 것이 바람직할 수 있다The injection amount setting module 100, the reset tube 110 switchably coupled to the dose dial 20 according to the operation of the injection button 40, is coupled on the outside of the reset tube 110 at the same time A ratchet tube 120 that is driven to rotate, a scale drum 130 that rotates slidably along the axial direction on the outer surface of the ratchet tube 120 , and the housing 10 and the ratchet tube 120 on the The rod guide 210 includes a torsion spring 140 to which both ends are coupled, and the rod guide 210 coupled to the reset tube 110 is coupled to the inside of the piston rod 220 by screw rotation coupling. ) by enabling the lower linear motion of the piston rod 220 through the rotation, it may be desirable to have a cartridge drug release structure through the screw-type coupling between the piston rod 220 and the rod guide 210
상기 하우징(10)에 결합되는 스프링 베이스(150)를 포함하고, 상기 토션 스프링(140)은 양단이 각각 스프링 베이스(150) 및 라쳇 튜브(120) 상에 결합되고, 상기 도즈 다이얼(20)을 통한 회전 시에는, 상기 라쳇 튜브(120)에 고정된 상기 토션 스프링(140)의 일측은 회전 거동하는 반면, 상기 스프링 베이스(150)에 고정된 상기 토션 스프링(140)의 타측은 고정된 상태를 유지함으로써 스프링의 꼬임 상태를 만드는 것이 바람직할 수 있다.and a spring base 150 coupled to the housing 10, the torsion spring 140 having both ends coupled to the spring base 150 and the ratchet tube 120, respectively, and the dose dial 20 During rotation, one side of the torsion spring 140 fixed to the ratchet tube 120 rotates while the other side of the torsion spring 140 fixed to the spring base 150 is fixed. It may be desirable to create a twisted state of the spring by maintaining it.
상기 로드 가이드(210)는, 상기 피스톤 로드(220)의 내부면에 형성된 가이드 결합홈에 분리가능하게 결합하는 가이드 나선 돌기가 형성된 가이드 몸체 및 상기 가이드 몸체의 일측 외면 상에 돌출 형성되어져 상기 리셋 튜브(110)의 내면 상에 형성된 가이드 결합홈에 분리가능하게 결합하는 가이드 회전 돌기를 포함하는 것이 바람직할 수 있다.The rod guide 210 includes a guide body having a guide spiral protrusion detachably coupled to a guide coupling groove formed on an inner surface of the piston rod 220, and a guide body protruding from one side of the outer surface of the guide body to form the reset tube. It may be preferable to include a guide rotating protrusion detachably coupled to the guide coupling groove formed on the inner surface of the 110 .
상술한 바와 같은 본 발명에 따른 약물 투입 조절 장치는 로드 가이드의 회전 및 피스톤 로드의 하부 직선 운동에 따라서, 피스톤 로드의 외주면 상에 스크류 결합된 로드락은 로드 홀더 내부 상에서 회전이 제한된 상태에서 직선 운동 만을 가능하게 한다.According to the rotation of the rod guide and the lower linear motion of the piston rod, in the drug injection control device according to the present invention as described above, the rod lock screw-coupled to the outer circumferential surface of the piston rod moves linearly in a state in which rotation is restricted on the inside of the rod holder. makes only possible
즉, 하우징 내에서 도즈 다이얼에 연동된 상태로 회전 운동함으로써 토션 스프링에 비틀림 모멘트를 저장하여 주입하고자 하는 약물의 량을 설정하게 하는 주입량 설정 모듈을 통해 사용자의 의중에 따른 약물 주입량을 미리 설정한 상태에서, 약물 투입 조절 장치의 상단에 배치된 주입 버튼의 동작에 따라 주입량 설정 모듈에 스위칭 가능하게 결합된 약물 토출 모듈을 작동 가능하게 하는 과정에서, 상기 주입 버튼에 연동가능하게 결합된 리셋 튜브를 통해 로드 가이드가 피스톤 로드의 내부 상에 스크류 회전 결합으로 결속됨으로써 상기 로드 가이드의 회전 및 피스톤 로드의 하부 직선 운동에 따라서, 로드락은 로드 홀더의 외주면 상에 길이 방향을 따라 관통 형성된 락 안내부를 통해 락 돌기부가 슬라이딩 운동함으로써 로드 락의 직선운동 만을 가능하게 한다.That is, the drug injection amount according to the user's intention is set in advance through the injection amount setting module that stores the torsion moment in the torsion spring and sets the amount of the drug to be injected by rotating in a state linked to the dose dial in the housing. In the process of enabling the drug discharge module switchably coupled to the injection amount setting module according to the operation of the injection button disposed on the upper end of the drug injection control device, through the reset tube operably coupled to the injection button As the rod guide is coupled by screw rotation on the inside of the piston rod, according to the rotation of the rod guide and the lower linear motion of the piston rod, the rod lock is locked through the lock guide formed through the longitudinal direction on the outer circumferential surface of the rod holder. As the protrusion slides, only the linear motion of the load lock is possible.
도 1은 본 발명의 일 실시예에 따른 약물 투입 조절 장치의 결합 사시도를 보인다.1 shows a combined perspective view of a drug injection control device according to an embodiment of the present invention.
도 2는 도 1에 따른 약물 투입 조절 장치의 분해 사시도를 보인다.Figure 2 shows an exploded perspective view of the drug injection control device according to Figure 1;
도 3은 도 1의 약물 투입 조절 장치의 단면도를 보인다.3 is a cross-sectional view of the drug injection control device of FIG.
도 4는 도 3의 A 영역에 대한 확대도를 보인다.FIG. 4 is an enlarged view of area A of FIG. 3 .
도 5는 도즈 다이얼과 리셋 튜브 간의 결합 관계를 보이는 도면이다.5 is a view showing a coupling relationship between the dose dial and the reset tube.
도 6은 주입 버튼, 버튼 플레이트, 리셋 튜브, 스프링 베이스 및 스케일 드럼이 결합된 상태를 보인다.6 shows a state in which the injection button, the button plate, the reset tube, the spring base and the scale drum are combined.
도 7은 도즈 다이얼, 스케일 드럼, 레쳇 튜브, 리셋 튜브 및 피스톤 로드가 결합된 상태를 보인다.7 shows a state in which the dose dial, the scale drum, the ratchet tube, the reset tube and the piston rod are combined.
도 8은 도 3의 B 영역에 대한 확대도를 보인다.FIG. 8 is an enlarged view of area B of FIG. 3 .
도 9는 피스톤 로드와 로드 락을 감싸는 방식으로 로드 홀더가 결합된 상태를 보인다.9 shows a state in which the rod holder is coupled in a manner that surrounds the piston rod and the rod lock.
도 10은 도 9의 단면 사시도를 보인다.FIG. 10 is a cross-sectional perspective view of FIG. 9 .
도 11은 로드 락을 보인다.11 shows the load lock.
이하, 첨부된 도면을 참조하여 본 발명의 실시예를 더욱 상세히 설명하기로 한다. 그러나, 본 발명은 이하에서 개시되는 실시예에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이다. 도면 상에서 동일 부호는 동일한 요소를 지칭한다.Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and the scope of the invention to those of ordinary skill in the art It is provided for complete information. In the drawings, like reference numerals refer to like elements.
각 도면의 구성요소들에 참조부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호를 가지도록 하고 있음에 유의해야 한다. 또한, 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다.In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.
이하, 도 1 내지 도 11을 참조하여 본 발명의 실시예에 따라 도즈 다이얼을 통해 설정된 약물을 안정적으로 주입 가능하도록 로드 가이드(210)의 회전 및 상기 로드 가이드(210)에 연동 운동하는 피스톤 로드의 직선 운동 구조를 갖는 약물 투입 조절 장치를 설명한다.Hereinafter, with reference to FIGS. 1 to 11 , the rotation of the rod guide 210 and the piston rod interlocking with the rod guide 210 to stably inject the drug set through the dose dial according to an embodiment of the present invention. A drug injection control device having a linear motion structure will be described.
약물 투입 조절 장치는 중공의 하우징(10), 하우징(10)의 일측 상에 회전 가능하게 결합된 도즈 다이얼(20), 상기 하우징(10)의 타측 상에 고정 결합된 상태에서 약물이 내장된 카트리지가 수용되는 동시에 약물이 토출되는 주입 니들이 일측 상에 결합되는 카트리지 홀더(30), 도즈 다이얼(20)의 외측 상에 배치되는 주입 버튼(40), 상기 도즈 다이얼(20) 내에서 주입 버튼(40)의 눌림 및 회복을 가능하게 하는 버튼 스프링(50), 및 카트리지 홀더(30)의 외부 상에 분리가능하게 결합되는 캡(60)을 포함한다.The drug injection control device includes a hollow housing 10, a dose dial 20 rotatably coupled to one side of the housing 10, and a cartridge in which a drug is embedded in a state fixedly coupled to the other side of the housing 10. is accommodated and the injection needle from which the drug is discharged is coupled on one side of the cartridge holder 30, the injection button 40 disposed on the outside of the dose dial 20, the injection button 40 within the dose dial 20 ) includes a button spring 50 that enables pressing and recovery, and a cap 60 that is detachably coupled on the outside of the cartridge holder 30 .
본 발명은 하우징(10) 내에서 도즈 다이얼(20)에 연동된 상태로 회전 운동함으로써 토션 스프링에 비틀림 모멘트를 저장하여 주입하고자 하는 약물의 량을 설정하게 하는 주입량 설정 모듈(100); 및 상기 주입 버튼(40)의 동작에 따라 상기 주입량 설정 모듈(100)에 스위칭 가능하게 결합되며, 상기 토션 스프링에 가해진 비틀림 모멘트의 해제를 통해 운동함으로써 상기 주입량 설정 모듈(100)에 설정된 약물 설정량을 상기 카트리지 홀더(30)에 내장된 카트리지에서 외부로 토출하게 하는 약물 토출 모듈(200);을 포함한다.The present invention provides an injection amount setting module 100 for setting an amount of a drug to be injected by storing a torsion moment in a torsion spring by rotating in a state interlocked with the dose dial 20 in the housing 10; and a drug set amount set in the injection amount setting module 100 by being switchably coupled to the injection amount setting module 100 according to the operation of the injection button 40, and moving through release of a torsion moment applied to the torsion spring and a drug dispensing module 200 for discharging from the cartridge built into the cartridge holder 30 to the outside.
상기 주입량 설정 모듈(100)은, 상기 주입 버튼(40)의 동작에 따라 상기 도즈 다이얼(20)에 스위칭 가능하게 결합되는 리셋 튜브(110), 상기 리셋 튜브(110)의 외측 상에 결합되어 동시에 회전 구동하는 라쳇 튜브(120), 상기 라쳇 튜브(120)의 외면 상에 축 방향을 따라 슬라이딩 가능하게 회전 운동하는 스케일 드럼(130), 및 상기 하우징(10)과 상기 라쳇 튜브(120) 상에 양 끝단이 결합된 토션 스프링(140) 및 상기 라쳇 튜브(120)에 일측이 결합된 토션 스프링(140)의 타측이 고정되는 스프링 베이스(150), 도즈 다이얼(20) 내에 고정 배치되되 버튼 스프링(50)을 지지하는 기능을 하는 버튼 플레이트(160) 및 라쳇 튜브(120) 상에 회전 가능하게 결합된 상태에서 하우징(10) 내부에 슬라이딩 가능하게 결합하는 앵커(170)를 포함한다.The injection amount setting module 100, the reset tube 110 switchably coupled to the dose dial 20 according to the operation of the injection button 40, is coupled on the outside of the reset tube 110 at the same time A ratchet tube 120 that rotates, a scale drum 130 that rotates slidably along an axial direction on the outer surface of the ratchet tube 120, and the housing 10 and the ratchet tube 120 A torsion spring 140 having both ends coupled thereto, and a spring base 150 having one side coupled to the ratchet tube 120 and the other side of the torsion spring 140 fixed therein, is fixedly disposed within the dose dial 20 and a button spring ( 50) and an anchor 170 slidably coupled to the inside of the housing 10 in a rotatably coupled state on the button plate 160 and the ratchet tube 120 serving to support the 50).
상기 리셋 튜브(110)는 중공 원통 형상을 갖는 구조체로서, 주입 버튼(40)을 이루는 버튼 다리부(41)가 결합되도록 외주면 상에 원주 방향을 따라 홈 형성되는 버튼 결합홈(111), 도즈 다이얼(20)의 내부에 형성된 튜브 결합 돌기에 해제 가능하게 결합되는 다이얼 결합 돌기(112), 라쳇 튜브(120)에 결합되어져 상기 라쳇 튜브(120)의 동시 회전을 가능하게 하는 튜브 결합구(113)를 포함한다.The reset tube 110 is a structure having a hollow cylindrical shape, and a button coupling groove 111 formed in a groove along the circumferential direction on the outer circumferential surface so that the button leg part 41 constituting the injection button 40 is coupled, and a dose dial. A dial coupling protrusion 112 releasably coupled to the tube coupling protrusion formed inside the 20, a tube coupling hole 113 coupled to the ratchet tube 120 to enable simultaneous rotation of the ratchet tube 120 includes
라쳇 튜브(120)는 리셋 튜브(110)를 내부에 수용하는 중공 원통 형상을 갖는 구조체로서, 외주면 상에 길이 방향을 따라 돌출 형성되는 드럼 가이드 돌기(121), 라쳇 튜브(120)의 일측 상에 앵커(170)의 회전 가능한 상태의 결합을 가능하게 하도록 원주 방향을 따라 홈 형성되는 앵커 결합홈(122), 리셋 튜브(110)의 제1 튜브 결합구 상에 결속하는 제2 튜브 결합구(123) 및 토션 스프링(140) 끝단과의 결합을 가능하게 하는 튜브 스프링 걸림홈(124)을 포함한다.The ratchet tube 120 is a structure having a hollow cylindrical shape accommodating the reset tube 110 therein, and on one side of the drum guide protrusion 121 protruding in the longitudinal direction on the outer circumferential surface, and the ratchet tube 120 . Anchor coupling groove 122 grooved along the circumferential direction to enable coupling of the anchor 170 in a rotatable state, and a second tube coupling hole 123 for binding on the first tube coupling hole of the reset tube 110 . ) and a tube spring engaging groove 124 that enables coupling with the end of the torsion spring 140 .
스케일 드럼(130)은 라쳇 튜브(120)에 형성된 드럼 가이드 돌기에 대응하도록 내면 상에 길이 방향을 따라 홈 형성된 드럼 가이드 홈(131), 및 하우징(10)의 내면 상에 나선 형상으로 돌출 형성된 드럼 회전 돌기에 대응하도록 외주면 상에 나선 형상을 따라 홈 형성된 드럼 회전 홈(132)을 포함한다.The scale drum 130 includes a drum guide groove 131 grooved along the longitudinal direction on the inner surface to correspond to the drum guide projection formed on the ratchet tube 120 , and a drum formed to protrude in a spiral shape on the inner surface of the housing 10 . It includes a drum rotation groove 132 grooved along a spiral shape on the outer peripheral surface to correspond to the rotation projection.
상기 토션 스프링(140)은 양단이 각각 스프링 베이스(150) 및 라쳇 튜브(120) 상에 결합되고, 상기 도즈 다이얼(20)을 통한 회전 시에는, 상기 라쳇 튜브(120)에 고정된 상기 토션 스프링(140)의 일측(141)은 회전 거동하는 반면, 상기 스프링 베이스(150)에 고정된 상기 토션 스프링(140)의 타측(142)은 고정된 상태를 유지함으로써 스프링의 꼬임 상태를 만들게 한다.The torsion spring 140 has both ends coupled to the spring base 150 and the ratchet tube 120, respectively, and when rotating through the dose dial 20, the torsion spring fixed to the ratchet tube 120 While the one side 141 of 140 rotates, the other side 142 of the torsion spring 140 fixed to the spring base 150 maintains a fixed state, thereby creating a twisted state of the spring.
상기 스프링 베이스(150)는 도즈 다이얼(20)의 내부 상에 배치되되 상기 하우징(10) 상에 요동 없이 고정 결합되는 구조체로서, 토션 스프링(140) 끝단과의 결합을 가능하게 하는 베이스 스프링 걸림홈(151) 및 도즈 다이얼(20) 회전 구동시에 도즈 다이얼(20)에 형성된 래치 돌기(22)에 대응해서 딸깍음을 내도록 형성된 래치(152)를 포함한다. 즉, 도즈 다이얼(20)을 회전하는 경우에 도즈 다이얼(20)의 내부 상에 반경 방향을 따라 형성된 다이얼 격벽(21)의 일면 상에 형성된 래치 돌기와 상기 래치가 차례로 접하는 과정을 통해서 주입량에 대한 피드백을 제공하게 한다. The spring base 150 is a structure that is disposed on the inside of the dose dial 20 and is fixedly coupled to the housing 10 without shaking, and a base spring locking groove that enables coupling with the end of the torsion spring 140 . and a latch 152 formed to click in response to the latch protrusion 22 formed on the dose dial 20 when the dose dial 20 is rotated and driven. That is, when the dose dial 20 is rotated, feedback on the injection amount through the process of sequentially contacting the latch protrusion formed on one surface of the dial partition wall 21 formed along the radial direction on the inside of the dose dial 20 and the latch to provide
버튼 플레이트(160)는 도즈 다이얼(20)의 다이얼 격벽을 기준으로 일측에 형성된 제1 챔버 상에 고정 배치되는 원형 플레이트 형성으로서, 상기 버튼 플레이트(160)의 중앙에 형성된 가이드 고정홀(161) 및 가이드 고정홀을 중심으로 방사상으로 형성되는 복수의 버튼 가이드홀(162)을 포함한다. 상기 복수의 버튼 가이드홀은 주입 버튼(40)을 이루는 복수의 버튼 다리부(41)가 관통 결합된다. 즉, 주입 버튼(40)은 버튼 플레이트(160)를 통해 안정적인 직선 운동을 가능하게 함과 동시에 버튼 스프링(50)을 주입 버튼(40) 상에서 안정적으로 배치하게 한다. 버튼 스프링(50)은 버튼 플레이트(160)에 놓인 상태에서 주입 버튼(40)에 대한 가압 시에 상기 버튼 플레이트(160)를 저점으로 한 상태에서 압축이 이루어지고, 가압이 해제되면 원복을 하는 구조이다.The button plate 160 is a circular plate that is fixedly disposed on the first chamber formed on one side based on the dial partition wall of the dose dial 20, and includes a guide fixing hole 161 formed in the center of the button plate 160 and It includes a plurality of button guide holes 162 radially formed around the guide fixing hole. The plurality of button guide holes are coupled through a plurality of button leg portions 41 constituting the injection button 40 . That is, the injection button 40 enables stable linear motion through the button plate 160 and at the same time allows the button spring 50 to be stably disposed on the injection button 40 . When the button spring 50 is placed on the button plate 160 and is pressed against the injection button 40, the button plate 160 is compressed in a state where the button plate 160 is the lowest point, and when the pressure is released, the button spring 50 is restored. am.
앵커(170)는 내면 상에 원주 방향을 따라 돌출 형성된 앵커 원주 돌기(171) 및 외주면상에서 축 방향을 따라 형성된 하우징 결합 돌기(172)를 포함한다. 앵커 원주 돌기(171)는 라쳇 튜브(120) 상에 홈 형성된 앵커(170) 결합홈에 대응되도록 결합하고, 하우징 결합 돌기(172)는 하우징(10)의 내면에 형성된 앵커 슬라이딩부(11)에 대응되도록 결합한다.The anchor 170 includes an anchor circumferential protrusion 171 protruding along the circumferential direction on the inner surface and a housing engaging protrusion 172 formed along the axial direction on the outer circumferential surface. The anchor circumferential protrusion 171 is coupled to correspond to the anchor 170 coupling groove formed on the ratchet tube 120 , and the housing coupling protrusion 172 is on the anchor sliding part 11 formed on the inner surface of the housing 10 . combine to match.
주입 버튼(40)을 가압하지 않은 상태에서, 도즈 다이얼(20)을 회전하게 되는 경우를 보면 다음과 같다.A case in which the dose dial 20 is rotated while the injection button 40 is not pressed is as follows.
도즈 다이얼(20)의 내측면에 원주방향을 따라 형성된 튜브 결합 치형과 결합된 리셋 튜브(110)는 상기 리셋 튜브(110)의 타측을 통해 결합된 라쳇 튜브(120) 상에 결합하고, 상기 라쳇 튜브(120)의 외면상에 축 방향을 따라 직선 형태로 배치된 드럼 가이드 레일을 따라 슬라이딩 운동 가능하게 결합된 스케일 드럼(130)과 결합한 상태에서, 상기 스케일 드럼(130)은 하우징(10)의 내면 상에 나선 형성된 드럼 가이드 나선 돌기와 형합된 상태로 결합한다. 이를 통해, 상기 도즈 다이얼(20)의 회전 구동은 결과적으로 스케일 드럼(130)의 하우징(10)을 따른 소정 거리의 이동을 가능하게 함과 동시에 토션 스프링(140)의 비틀림 모멘트 저장을 가능하게 한다.The reset tube 110 coupled to the tube coupling tooth formed along the circumferential direction on the inner surface of the dose dial 20 is coupled to the ratchet tube 120 coupled through the other side of the reset tube 110, and the ratchet In a state in which the scale drum 130 is coupled to the scale drum 130 slidably coupled along the drum guide rail arranged in a straight line along the axial direction on the outer surface of the tube 120 , the scale drum 130 is the housing 10 . The drum guide spiral protrusion and the spiral formed on the inner surface are engaged in a mating state. Through this, rotational driving of the dose dial 20 results in enabling movement of a predetermined distance along the housing 10 of the scale drum 130 and storing the torsional moment of the torsion spring 140 at the same time. .
상기 약물 토출 모듈(200)은, 상기 주입 버튼(40)의 동작에 따라 상기 리셋 튜브(110) 상에 스위칭 가능하게 결합되는 로드 가이드(210), 상기 로드 가이드(210)의 외면 상에 스크류 결합된 상태에서 상기 로드 가이드(210)의 회전 운동에 따라 직선 운동을 실시함으로써 카트리지 홀더(30)에 내장된 카트리지의 약물을 외부로 토출하게 하는 피스톤 로드(220), 카트리지 홀더(30)에 결합하되 피스톤 로드(220)가 축방향을 따라 관통 결합된 상태로 배치된 로드 홀더(230), 및 상기 로드 홀더(230) 내에서 피스톤 로드(220)의 외면 상에 스크류 결합되는 구조를 갖는 로드락(240)을 포함한다.The drug dispensing module 200 is a rod guide 210 that is switchably coupled to the reset tube 110 according to the operation of the injection button 40 , and is screwed onto the outer surface of the rod guide 210 . The piston rod 220, which discharges the drug of the cartridge embedded in the cartridge holder 30 to the outside by performing a linear motion according to the rotational motion of the rod guide 210 in the state of being coupled to the cartridge holder 30 A rod holder 230 in which the piston rod 220 is through-coupled along the axial direction, and a load lock having a structure in which the piston rod 220 is screwed onto the outer surface of the piston rod 220 in the rod holder 230 ( 240).
상기 로드 가이드(210)는 피스톤 로드(220)의 내부면에 형성된 가이드 결합홈에 분리가능하게 결합하는 가이드 나선 돌기(212)가 형성된 가이드 몸체(211)), 상기 가이드 몸체의 일측 외면 상에 돌출 형성되어져 상기 리셋 튜브(110)의 내면 상에 형성된 가이드 결합홈에 분리가능하게 결합하는 가이드 회전 돌기(213) 및 가이드 몸체의 끝단 상에 축방향을 따라 돌출 형성된 상태에서 버튼 플레이트(160)의 중앙에 형성된 가이드 고정홀에 결합되는 가이드 볼(214)을 포함한다. 즉, 로드 가이드(210)은 도즈 다이얼(20)에 고정 결합된 버튼 플레이트(160)의 가이드 고정홀을 통해 가이드 볼이 결합되어 제자리 상하 요동 없이 제자리 회전을 가능하게 된 상태에서, 가이드 회전 돌기를 통해 리셋 튜브(110) 상에 결합 내지 해제 가능한 스위칭 상태를 갖고, 가이드 나선 돌기를 통해 피스톤 로드(220)와 스크류 결합을 함으로써 상대적인 운동을 가능하게 한다.The rod guide 210 is a guide body 211 having a guide spiral protrusion 212 detachably coupled to a guide coupling groove formed on the inner surface of the piston rod 220), and protrudes on an outer surface of one side of the guide body. The center of the button plate 160 in a state in which the guide rotation protrusion 213 which is formed and detachably coupled to the guide coupling groove formed on the inner surface of the reset tube 110 and the guide body protrudes along the axial direction on the end of the guide body It includes a guide ball 214 coupled to the guide fixing hole formed in the. That is, the rod guide 210 is coupled to the guide ball through the guide fixing hole of the button plate 160 fixedly coupled to the dose dial 20 to enable rotation in place without up-and-down movement in place. It has a switching state that can be coupled or released on the reset tube 110 through the reset tube 110, and enables a relative movement by screwing the piston rod 220 through the guide spiral protrusion.
상기 피스톤 로드(220)는 그 축 방향을 따라 로드 가이드(210)이 관통 결합되는 중공 원통 형상을 갖는 것으로서, 로드 락(240)이 회전 가능하게 결합되는 락 결합 돌기가 형성되는 로드 진행부(221) 및 로드 락(240)이 회전 불가능하게 멈춤턱(223)이 형성되는 로드 멈춤부(222)를 포함한다.The piston rod 220 has a hollow cylindrical shape through which the rod guide 210 is coupled therethrough along its axial direction, and a rod progressing part 221 in which a lock coupling protrusion to which the rod lock 240 is rotatably coupled is formed. ) and a rod stop 222 in which the stopper 223 is formed so that the load lock 240 is non-rotatable.
상기 로드 홀더(230)는 중공 원통 형상을 갖는 것으로서, 그 외주면 상에 원주 방향을 따라 돌출 형성된 홀더 고정턱(231)을 통해 카트리지 홀더(30)의 외측 상에 고정되며, 그 외주면 상에 길이 방향을 따라 관통 형성된 락 안내부(232)을 통해 로드 락(240)의 직선운동을 가능하게 한다.The rod holder 230 has a hollow cylindrical shape, and is fixed on the outside of the cartridge holder 30 through a holder fixing jaw 231 protruding along the circumferential direction on the outer circumferential surface, and on the outer circumferential surface in the longitudinal direction. It enables the linear movement of the load lock 240 through the lock guide 232 formed through the .
로드 락(240)은 피스톤 로드(220)의 외면 상에 스크류 결합된 상태에서 상기 피스톤 로드(220)의 직선 운동에 연동하여 회전 운동을 가능하게 한다.The load lock 240 enables rotational motion in conjunction with the linear motion of the piston rod 220 in a state in which it is screwed on the outer surface of the piston rod 220 .
로드 락(240)은 피스톤 로드(220)의 외면 상에 결합하는 락 본체(241) 및 락 본체의 일측 상에 축 방향을 따라 돌출 형성되는 락 돌기부(243)를 포함한다. 상기 락 돌기부는 락 안내부(232)에 삽입된 상태에서 상기 카트리지 홀더(30)의 축 방향을 따라서 직선 운동을 실시한다. 상기 구조에 따라서, 로드 락(240)은 피스톤 로드(220)의 회전에 따라 연동하여 운동을 실시하되, 상기 락 안내부(232)에 의해 회전하는 것이 제약된 상태에서 락 안내부(232)를 따른 직선 운동 만이 가능한 상태가 된다.The load lock 240 includes a lock body 241 coupled to an outer surface of the piston rod 220 and a lock protrusion 243 protruding in the axial direction on one side of the lock body. The lock protrusion performs a linear motion along the axial direction of the cartridge holder 30 while being inserted into the lock guide 232 . According to the structure, the load lock 240 performs a motion in association with the rotation of the piston rod 220 , but the lock guide 232 is moved in a state in which rotation is restricted by the lock guide 232 . Only linear motion is possible.
도 8 내지 도 11을 참조하면, 본 발명은 피스톤 로드 내에 Screw를 형성한 상태에서 로드 가이드를 상기 피스톤 로드의 내부 상에 스크류 결합하는 것으로 하였고, 리셋 튜브의 회전에 따라 상기 리셋 튜브에 결합된 로드 가이드를 제자리 회전하게 한 상태에서, 상기 로드 가이드에 맞물린 상태의 피스톤 로드를 카트리지 홀더 측으로 내려가게 한다.8 to 11 , in the present invention, the rod guide is screwed onto the inside of the piston rod in a state where the screw is formed in the piston rod, and the rod coupled to the reset tube according to the rotation of the reset tube. With the guide rotated in place, the piston rod engaged with the rod guide is lowered toward the cartridge holder.
피스톤 로드의 외부 Screw 상에 로드락이 회전 가능하게 연결되었고, 상기 상태에서 피스톤 로드 및 로드 락을 감싸는 방식으로 로드 홀더를 설치하여 상기 피스톤 로드의 회전 및 상기 로드 락의 직선 운동을 하게 한다.The rod lock is rotatably connected to the external screw of the piston rod, and in the above state, the rod holder is installed in a manner that surrounds the piston rod and the rod lock to rotate the piston rod and linearly move the rod lock.
상기 주입 버튼(40) 동작 시에, 상기 리셋 튜브(110)에 결합된 상기 로드 가이드(210)이 상기 피스톤 로드(220)의 내부 상에 스크류 회전 결합으로 결속됨으로써 상기 로드 가이드(210)의 회전을 통해 상기 피스톤 로드(220)의 하부 직선 운동을 가능하게 한다.When the injection button 40 is operated, the rod guide 210 coupled to the reset tube 110 is coupled to the inside of the piston rod 220 by screw rotation, whereby the rod guide 210 rotates. It enables the lower linear motion of the piston rod 220 through.
상술한 바와 같은 본 발명에 따른 약물 투입 조절 장치는 도즈 다이얼을 통해 설정된 약물을 안정적으로 주입 가능하도록 로드 가이드(210)의 회전 및 상기 로드 가이드(210)에 연동 운동하는 피스톤 로드의 직선 운동 구조를 가능하게 한다.The drug injection control device according to the present invention as described above is the rotation of the rod guide 210 and the linear motion structure of the piston rod interlocking with the rod guide 210 to stably inject the set drug through the dose dial. make it possible
이상의 설명은 본 발명의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 다양한 수정 및 변형이 가능할 것이다. 따라서, 본 발명에 개시된 실시예들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (5)

  1. 중공의 하우징(10), 상기 하우징(10)의 일측 상에 회전 가능하게 결합된 도즈 다이얼(20), 상기 하우징(10)의 타측 상에 고정 결합된 상태에서 약물이 내장된 카트리지가 수용되는 동시에 약물이 토출되는 주입 니들이 일측 상에 결합되는 카트리지 홀더(30), 상기 도즈 다이얼(20)의 외측 상에 배치되는 주입 버튼(40), 및 상기 카트리지 홀더(30)의 외부 상에 분리가능하게 결합되는 캡(60)을 포함하는 약물 투입 조절 장치에 있어서, A hollow housing 10, a dose dial 20 rotatably coupled on one side of the housing 10, and a cartridge containing a drug in a fixedly coupled state on the other side of the housing 10 are accommodated at the same time The cartridge holder 30 to which the injection needle from which the drug is discharged is coupled on one side, the injection button 40 disposed on the outside of the dose dial 20, and detachably coupled on the outside of the cartridge holder 30 In the drug injection control device including the cap 60,
    상기 하우징(10) 내에 배치된 토션 스프링(140)에 비틀림 모멘트를 저장하여 주입하고자 하는 약물의 량을 설정하게 하는 주입량 설정 모듈(100); 및an injection amount setting module 100 for setting an amount of a drug to be injected by storing a torsion moment in the torsion spring 140 disposed in the housing 10; and
    상기 토션 스프링(140)에 가해진 비틀림 모멘트의 해제를 통해 운동함으로써 상기 카트리지 홀더(30)에 내장된 카트리지에서 외부로 토출하게 하는 약물 토출 모듈(200);을 포함하고,The drug dispensing module 200 for discharging from the cartridge built into the cartridge holder 30 to the outside by moving through the release of the torsional moment applied to the torsion spring 140;
    상기 약물 토출 모듈(200)은,The drug dispensing module 200,
    상기 주입 버튼(40)의 동작에 따라 상기 주입량 설정 모듈(100) 상에 스위칭 가능하게 결합되는 로드 가이드(210),A rod guide 210 that is switchably coupled to the injection amount setting module 100 according to the operation of the injection button 40;
    상기 로드 가이드(210)의 외측 상에 스크류 결합된 상태에서 상기 로드 가이드(210)의 회전 운동에 따라 직선 운동을 실시함으로써 카트리지 홀더(30)에 내장된 카트리지의 약물을 외부로 토출하게 하는 피스톤 로드(220),A piston rod for discharging the drug of the cartridge embedded in the cartridge holder 30 to the outside by performing a linear motion according to the rotational motion of the rod guide 210 in a state of being screwed on the outside of the rod guide 210 . (220),
    상기 카트리지 홀더(30)의 축방향을 따라 일측 상에 결합하되 상기 피스톤 로드(220)가 축방향을 따라 관통 결합된 상태로 배치된 로드 홀더(230) 및 A rod holder 230 coupled to one side along the axial direction of the cartridge holder 30 and disposed in a state in which the piston rod 220 is coupled through the axial direction, and
    상기 로드 홀더(230) 내에서 상기 피스톤 로드(220)의 외면 상에 스크류 결합되는 로드락(240)을 포함하고,and a load lock 240 screw-coupled to the outer surface of the piston rod 220 in the rod holder 230,
    상기 주입 버튼(40) 동작 시에, When the injection button 40 is operated,
    상기 로드 가이드(210)의 회전 및 상기 피스톤 로드(220)의 하부 직선 운동에 따라서, 상기 로드락(240)은 상기 로드 홀더(230)의 외주면 상에 길이 방향을 따라 관통 형성된 락 안내부(232)를 통해 상기 락 돌기부(243)가 슬라이딩 운동함으로써 상기 로드 락(240)의 직선운동 만을 가능하게 하며,According to the rotation of the rod guide 210 and the lower linear motion of the piston rod 220 , the load lock 240 is a lock guide part 232 formed through the longitudinal direction on the outer peripheral surface of the rod holder 230 . ) through which the lock protrusion 243 slides to enable only linear motion of the load lock 240,
    상기 로드락(240)은 상기 로드 홀더(230) 내부 상에서 회전이 제한된 상태에서 직선 운동 만이 가능한 것을 특징으로 하는, 약물 투입 조절 장치.The load lock 240 is a drug injection control device, characterized in that only linear motion is possible in a state in which rotation is restricted on the inside of the rod holder 230 .
  2. 제 1 항에 있어서,The method of claim 1,
    상기 로드락(240)은 상기 피스톤 로드(220)의 외면 상에 결합하는 락 본체(241) 및 락 본체의 일측 상에 축 방향을 따라 돌출 형성되는 락 돌기부(243)를 포함하는, 약물 투입 조절 장치.The load lock 240 includes a lock body 241 coupled to the outer surface of the piston rod 220 and a lock protrusion 243 protruding in the axial direction on one side of the lock body. Device.
  3. 제 1 항에 있어서,The method of claim 1,
    상기 주입량 설정 모듈(100)은, 상기 주입 버튼(40)의 동작에 따라 상기 도즈 다이얼(20)에 스위칭 가능하게 결합되는 리셋 튜브(110), 상기 리셋 튜브(110)의 외측 상에 결합되어 동시에 회전 구동하는 라쳇 튜브(120), 상기 라쳇 튜브(120)의 외면 상에 축 방향을 따라 슬라이딩 가능하게 회전 운동하는 스케일 드럼(130), 및 상기 하우징(10)과 상기 라쳇 튜브(120) 상에 양 끝단이 결합된 토션 스프링(140)을 포함하고,The injection amount setting module 100, the reset tube 110 switchably coupled to the dose dial 20 according to the operation of the injection button 40, is coupled on the outside of the reset tube 110 at the same time A ratchet tube 120 that rotates, a scale drum 130 that rotates slidably along an axial direction on the outer surface of the ratchet tube 120, and the housing 10 and the ratchet tube 120 It includes a torsion spring 140 to which both ends are coupled,
    상기 리셋 튜브(110)에 결합된 로드 가이드(210)가 상기 피스톤 로드(220)의 내부 상에 스크류 회전 결합으로 결속됨으로써 상기 로드 가이드(210)의 회전을 통해 상기 피스톤 로드(220)의 하부 직선 운동을 가능하게 함으로써, 피스톤 로드(220)와 로드 가이드(210) 간의 스크류 방식 결합을 통한 카트리지 약물 방출 구조를 갖는, 약물 투입 조절 장치.The lower straight line of the piston rod 220 through the rotation of the rod guide 210 as the rod guide 210 coupled to the reset tube 110 is coupled by screw rotation coupling on the inside of the piston rod 220 . By enabling movement, the drug injection control device having a cartridge drug release structure through the screw-type coupling between the piston rod 220 and the rod guide 210.
  4. 제 1 항에 있어서,The method of claim 1,
    상기 하우징(10)에 결합되는 스프링 베이스(150)를 포함하고, 상기 토션 스프링(140)은 양단이 각각 스프링 베이스(150) 및 라쳇 튜브(120) 상에 결합되고,It includes a spring base 150 coupled to the housing 10, and the torsion spring 140 has both ends coupled to the spring base 150 and the ratchet tube 120, respectively,
    상기 도즈 다이얼(20)을 통한 회전 시에는,When rotating through the dose dial 20,
    상기 라쳇 튜브(120)에 고정된 상기 토션 스프링(140)의 일측은 회전 거동하는 반면, 상기 스프링 베이스(150)에 고정된 상기 토션 스프링(140)의 타측은 고정된 상태를 유지함으로써 스프링의 꼬임 상태를 만드는, One side of the torsion spring 140 fixed to the ratchet tube 120 rotates while the other side of the torsion spring 140 fixed to the spring base 150 maintains a fixed state, thereby twisting the spring. making state,
    약물 투입 조절 장치.Drug dosing control device.
  5. 제 1 항에 있어서,The method of claim 1,
    상기 로드 가이드(210)는, The rod guide 210,
    상기 피스톤 로드(220)의 내부면에 형성된 가이드 결합홈에 분리가능하게 결합하는 가이드 나선 돌기가 형성된 가이드 몸체 및 상기 가이드 몸체의 일측 외면 상에 돌출 형성되어져 상기 리셋 튜브(110)의 내면 상에 형성된 가이드 결합홈에 분리가능하게 결합하는 가이드 회전 돌기를 포함하는, 약물 투입 조절 장치.A guide body having a guide spiral protrusion that is detachably coupled to a guide coupling groove formed on the inner surface of the piston rod 220, and a guide body protruding from one outer surface of the guide body are formed on the inner surface of the reset tube 110 A drug injection control device comprising a guide rotating protrusion that is detachably coupled to the guide coupling groove.
PCT/KR2021/015680 2020-11-03 2021-11-02 Drug injection control device having structure in which rod lock screwed to piston rod is capable of linear motion whilst rotation thereof is restricted inside rod holder WO2022098045A1 (en)

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CN202180011361.4A CN115003354B (en) 2020-11-03 2021-11-02 Administration adjusting device having structure capable of only rectilinear movement
US17/795,624 US20230057245A1 (en) 2020-11-03 2021-11-02 Drug injection control device having structure in which rod lock screw-coupled to piston rod can make linear motion under restricted rotation within rod holder
JP2022545951A JP7460780B2 (en) 2020-11-03 2021-11-02 A drug injection adjusting device having a structure in which a rod lock screw-coupled to a piston rod can move linearly while being restricted in rotation inside a rod holder.

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KR1020200145236A KR102271965B1 (en) 2020-11-03 2020-11-03 Drug injection control device having a structure capable of linear motion in a state where the rod lock screwed to the piston rod rotates inside the rod holder

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